An american anti-submarine helicopter is flying on a missionAn American anti-submarine helicopter is flying on a mission
Catalina anti-submarine maritime patrol aircraft on take-offCatalina anti-submarine Maritime Patrol aircraft on take-off
Frozen in the ice, the submarine breaks it with its powerFrozen in the ice, the submarine breaks it with its power
Large anti - submarine ship of the russian flotillaLarge anti - submarine ship of the Russian Flotilla